Feel confident about the strength and longevity of this all-purpose Metal R828 coarse grit arbor thread fiberglass heavy duty conical flap disc. Designed to absorb vibration and improve user comfort, this tough disc features lightweight fiberglass and resin backing plates, while a zirconia grain delivers excellent cutting action on stainless, cast iron, titanium, and super alloys. A great option for applications that require speed and thorough stock removal, blending, and deburring, this disc includes angled polyester and cotton flaps that are ideal for sanding edges and contouring.